BH-F (Engineering) Ltd - VSF Combustion 400 Series.

VSF Combustion

Benefits:

Modular Design
Low Maintenance
Greater Controllability
Greater Accuracy
Fuel Savings
No Re-calibration required
Eliminates Linkages
Quiet in Operation
No Equipment in Hot Environment
Cost Effective

VSF Combustion is a high accuracy, modular system introduced
as an alternative to our standard automatic combustion system
(which is single fan, square-ported valve and bypass based)
and is suitable for all 400 Series forehearths and working ends.

This low maintenance modular design gives greater controllability
and accuracy, fuel savings and a cost-effective installation.
Each zone has only one moving part (the fan rotor assembly)
which is precision balanced during manufacture for reliable, quiet operation.
Because all settings are electronic no re-calibration is required
and accuracy is guaranteed.
The whole system has been designed to be completely safe by the incorporation
of pressure switches and gas shut-off valves.
All items are cabinet mounted to give a neat and simple solution for
forehearth and working end combustion controls.

Accuracy

The "VSF Combustion System" from BH-F for 400 Series gas-fired
forehearths and working ends offers precise and accurate firing control
over each individual zone by the use of variable speed variable flow rate fans.
With this system, the operation of a fan for each zone is directly controlled
by the appropriate zone temperature controller.
Command signals generated by the zone temperature controllers
are fed directly to the fan speed controllers and the speed of each fan
is increased or decreased accordingly.
The volume of gas/air mixture fed to each individual forehearth or working end zone
is proportional to fan speed, and this will increase or decrease according to
the demands placed on the system by the zone temperature control signal.
The gas regulator in the supply to each zone responds to any
increase or decrease in the air flow to maintain the correct ratio of
gas/air mixture fed to the manifolds and burners.

Simplicity

The BH-F "VSF Combustion System" is designed for simplicity,
for ease of installation and straightforward and simple maintenance
using modular components. It replaces the one large inefficient,
continuously running fixed speed fan,
the electrical or pneumatic actuators and associated supply equipment,
and air header and control valves with their bypass assemblies.

Low Maintenance

When supplied as original equipment the immediate benefit is a much
cleaner and neater machine floor layout.
The major benefits are improved controllability, fuel savings due to the increase
in operational efficiency, greater reliability and
a reduction in maintenance costs and down time due to the modular construction
of the system’s main components.
No regular or routine maintenance is required, and as the system has
electronically maintained settings which do not drift, no system adjustments are required.
The VSF system has individual zone integrity which ensures that
only one control zone is affected should a problem occur.

BH-F’s VSF Combustion and VSF Cooling Systems are compatible
and can be supplied as an integrated package or
as individual systems to suit customer or site requirements.

Cabinet Sizes

Free standing	From:	800W x 600D x 2300H mm (31.5 x 23.6 x 90.5 ins.)
.	To:	1200W x 600D x 2300H mm (47.2 x 23.6 x 90.5 ins.)
Wall mount	.	800W x 500D x 670H mm (31.5 x 19.7 x 26.4 ins.)
.	.	protection up to IP 54